Attachment for pneumatic hammers



April 6, 1926. 1,579,542

J. C. KEAVEY ATTACHMENT FORPNEUMATIG HAMMERS Filed Dec. 11. 1922 To aZZ whom it may concern".-

Patented Apr.- 6, 1926.

' 'Jon'n c. KEAVEY, or seven, snoring, 6310.

ATTACHMENT r031 PNEUMATIC HAmMERs. l

Application filed December 11, 1922. seriaino. 606,124.

Be it known thatI, JOHN citizen of the United States, residing at South Euclid,- in the county of Cuya 1oga and State of Ohio, have invented a. certain new and useful Improvement in Attachments forPneumatic Hammers, of which the fol lowing is a full, clear, and exact description, reference being-had to the accompanying drawings,

This invention relates generally to pneumatic hammers or rive'ters and more particularly to an improved device attached;

thereto to prevent the tool or set bein projected or shot away from the body 0? the pneumatic hammer "or riveter.

The object of the invention is to providean exceedingly cheap, simple and efficient device which can be quickl and easily applied to the standard types 0 pneumatic hammers or riveters and which will effectually prevent the escape or shootingout of the tool or set.

Accidents have frequently happened from the accidental shooting out, of the tool or set and it is therefore of the utmost importance that some means should be employed to prevent .such accidents.

This I have accomplished by the improved device herein shown and described and the invention resides in the peculiar constructionof the various parts and the manner of arranging and combining the same,'all.

of which will be fully described hereinafter and set forth in the appended claims.

In the drawings forming a part of the specification, Fig. 1 is a .side view of a pneumatic hammer provided with my improved appliance; Fig. 2 is a detail view of my improved device removed from the pneumatic hammer; Fig. dis a detail sectional view on the line 3-3 of Fig.2; and Fig. 4 is a detail sectional view on the line 4 i of Fig. 3.

Referring to the drawings, 10 indicates the body portion of the usual or standard type of pneumatic hammer or. riveter having the handle 11 provided with the usual form of trigger 12 and inv the forward end of the body portion 10 is the tool or set which is rapidly reoiprocated back and forth through the pneumatically operated plunger (not shown) contained within the body portion 10.

Unless some form of restraining device is employed, the tool or set 13' will be shot C. KEAvEY, a

by the from the hammer-[when the pneumatic operation takes 'placeand as it sometimes:-

happens, the trigger is operated-when then toolor set .is not in engagement with therivetaand the accidental shooting away of the tool 01' set will take'place and-in; order to" prevent such accidental displacement.

without impairing the operativeness' of'the. device, provide a; simple a-ndeflicient device whlchcan be quickly and easily atta'ched to: thexpneui natic' gun orjhammer and:

which consists of a divided ring or band 1 1 which surrounds the tool or set 13 at the grooved or shouldered portion thereof.

This band 14 is of thin spring material,

and consequently can be quickly and easily snapped around the tool or set and when once in place, will remain so and fit snugly around the grooved or shouldered portion of the toolor set. and being quite thin, does not obstruct the free and easy ,use of the hammer.

Connected to the ring or bandl l isia bail 15 constructed of thin sheetmetal, the

forward ends thereof being'connectedto the ring 1 1 at substantially diametrically 0ppo'site pointsandthe bail 15 is so shaped as to snugly fit the tapering sides of the body 7 portion 10 and its extreme inner end is con nected at 16 by welding or otherwise to the saddle or yoke 17, preferably constructed also of thin spring metal and capable of beextending legs ofthe saddle or yoke 17 are mg quickly and easily snapped over the body portion of the gunabout midway its the forward ends of a spring wire 18, the

central portion of which is 'in engagement with the handle of the gun and the intermediate portions thereof are coiled as shown at 19 so as to constantly exert a tension upon the saddle or yoke 17 and in this manner maintain the proper tension upon the bail 15 which in turn is connected to the tool or set through the medium of the ring 14.

When the device, constructed as herein shown and described is attached to the pneumatic gun or hammer and the same isoperated, the tool or set can be reciprocated in the usual manner for all its intended purposes; but should the trigger of the gun be pressed ata time when the tool or setis not in engagement with the rivet, the shooting out of the tool or set will be prevented ring which surrounds the same, conbail, which in turn is connected to the body of the pneumatic hammer or gun through the medium of the yieldable spring wire 18.

It will therefore be seen that I provide an exceedingly simple, cheap and efficient device, capable of carrying out all of the ob jects hereinafter referred to.

Having thus described my invention, what I claim is:

1. The combination with the body and tool or set, of a divided spring band surrounding said tool, a bail connected at its ends to said band, a yoke, straddling the body and to which the central portion of the bail is connected, and a spring carried by the body and having its ends-connected to the yoke.

2. The combination with the body and tool or set, of a divided spring band surrounding said tool, a bail connected at its ends to said band, said bail resting upon the body, a yoke straddling the body and to which the central portion of the bail is attached and a spring bail carried by the body and having its ends connected to the yoke at points below the point of connection between the yoke and first named bail.

3. A guard for pneumatic tools comprising a divided spring band adapted to be clamped around the set of a pneumatic tool, a bail having its ends connected with said band, a yoke straddling the body of said tool and connected with the central portion of said bail and a. spring member carried by said body and having its opposite ends connected with the opposite ends of said yoke.

In testimony whereof, I hereunto affix my signature.

JOHN C. KEAVEY. 

